::driving past a Christmas display with a baby Jesus::
Jack: mommy, who is that?
Me: it's baby Jesus.
Jack: who is baby Jesus?
Me: you know who he is. We say prayers to him before dinner, and we also read your children's bible.
Jack: but that (pointing at the display) is a baby. Jesus is a big guy.
Me: He grew up to be a big guy.
Jack: What does he do?
Me: he is a nice man who helps and loves everyone.
Jack: Even Darth Vader?
Me: Yep, even Darth Vader.
Jack: wow (awed voice)